sched/core_ctl: Fix state_lock spinlock contention

There is no need to call core_ctl_check() from scheduler tick path
on all CPUs. This results in core_ctl's state_lock spin lock
contention. Assign this job to the CPU which is responsible
for updating the ticks.

Change-Id: I9664037cc25c204d532bdd0f006c7e27ef143497
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>